Karl Friedrich August Gützlaff[1] (8 July 1803 – 9 August 1851), anglicised as Charles Gutzlaff, was a German missionary to the Far East, notable as one of the first Protestant missionaries in Bangkok, Thailand (1828) and in Korea (1832). He wrote widely read books, such as Journal of Three Voyages along the Coast of China in 1831, 1832 and 1833, with notices of Siam, Corea, and the Loo-Choo Islands (1834). He served as interpreter for British diplomatic missions during the First Opium War. Gutzlaff was one of the first Protestant missionaries in China to wear Chinese clothing. Gutzlaff Street in Hong Kong was named after him.

The Netherlands Missionary Society sent him to Java in 1826, where he learned Chinese. Gutzlaff left the society in 1828, and went first to Singapore, then to Bangkok with Jacob Tomlin of the London Missionary Society, where he worked on a translation of the Bible into Thai. He made a brief trip to Singapore in December 1829, where he married a single English missionary Maria Newell. The two returned to Bangkok in February 1830 where they worked on a dictionary of Cambodian and Lao. Before the work was completed, however, Maria died in childbirth, leaving a considerable inheritance. Gutzlaff married again, this time to Mary Wanstall, in 1834. The second Mrs. Gutzlaff ran a school and a home for the blind in Macau. She died in 1849 in Singapore, and was buried there. Gutzlaff's third marriage was to Dorothy Gabriel in England in 1850.

In Macau, and later in Hong Kong, Gutzlaff worked on a Chinese translation of the Bible, published a Chinese-language magazine, Eastern Western Monthly Magazine, and wrote Chinese-language books on practical subjects. In 1834 he published Journal of Three Voyages along the Coast of China in 1831, 1832 and 1833. Along the way he handed out tracts which had been prepared by another pioneer missionary to China, Robert Morrison.

In 1840, a group of four people (Walter Henry Medhurst, Charles Gutzlaff, Elijah Coleman Bridgman, and John Robert Morrison) cooperated to translate the Bible into Chinese. The translation of the Hebrew part was done mostly by Gutzlaff, with the exception that the Pentateuch and the book of Joshua were done by the group collectively. This translation, completed in 1847, is well-known due to its adoption by the revolutionary peasant leader Hong Xiuquan of the Taipingtianguo movement (Taiping Rebellion) as some of the reputed early doctrines of the organization. This Bible translation was a version (in High Wen-li, Traditional Chinese: 深文理) correct and faithful to the original.

In the 1830s Gutzlaff was persuaded by William Jardine of Jardine, Matheson & Co. to interpret for their ship captains during coastal smuggling of opium, with the assurance that this would allow him to gather more converts. Gutzlaff later assisted in negotiations during the First Opium War of 1839–42. In response to the Chinese government's unwillingness to allow foreigners into the interior, he founded a school for "native missionaries" in 1844 and trained nearly fifty Chinese during its first four years. Unfortunately, Gutzlaff's ideas outran his administrative ability. He wound up being victimized by his own native missionaries. They reported back to him glowing accounts of conversions and New Testaments sold. While some of Gutzlaff's native missionaries were genuine converts, others were opium addicts who never traveled to the places they claimed. Eager for easy money, they simply made up conversion reports and took the New Testaments which Gutzlaff provided and sold them back to the printer who resold them to Gutzlaff.

On 29November 1834, Gützlaff became a member of the newly formed "Society for the Diffusion of Useful Knowledge in China". The committee members represented a wide section of the business and missionary community in Canton: James Matheson (Chairman), David Olyphant, William Wetmore, James Innes, Thomas Fox, Elijah Coleman Bridgman, and John Robert Morrison. John Francis Davis, at that time chief superintendent of British trade in China, was made an honorary member.[2]